#389CDF is a mid-toned, cool blue. On the Color Lab it reads clean and engineered. It carries a legible label as a UI accent and sits well as a supporting tone.
Not just a swatch — here's how #389CDF works with other colors. Named schemes with #389CDF in its natural role, and a note on why the supporting colors balance it.
Carolina Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Carolina Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Carolina Blue is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Carolina Blue.
Carolina Blue is the single accent in this high-contrast editorial system — set on near-white paper against near-black ink, with a warm grey and a desaturated tint of Carolina Blue carrying the quiet middle.
Carolina Blue anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.
How #389CDF actually behaves in design work — read from its OKLCH lightness, chroma and hue, not just its raw numbers. Ten signals to help you decide where this color earns its place.
Not a swatch to memorise — a color to build with. Here is #389CDF at work across the surfaces designers actually ship.
:root {
--color-base: #389CDF;
--color-base-rgb: 56 156 223;
--color-base-oklch: oklch(66.5% 0.135 242.4);
--color-50: #F1F9FD;
--color-100: #DBEEFA;
--color-200: #B9DCF3;
--color-300: #89C1E6;
--color-400: #5DA5D5;
--color-500: #3B87BA;
--color-600: #346A8E;
--color-700: #2A4D64;
--color-800: #1F3442;
--color-900: #152128;
--color-on-base: #141310;
}
// tailwind.config.js
colors: {
carolina-blue: {
50: '#F1F9FD',
100: '#DBEEFA',
200: '#B9DCF3',
300: '#89C1E6',
400: '#5DA5D5',
500: '#3B87BA',
600: '#346A8E',
700: '#2A4D64',
800: '#1F3442',
900: '#152128',
},
}
$base: #389CDF; $base-ink: #141310; $base-50: #F1F9FD; $base-100: #DBEEFA; $base-200: #B9DCF3; $base-300: #89C1E6; $base-400: #5DA5D5; $base-500: #3B87BA; $base-600: #346A8E; $base-700: #2A4D64; $base-800: #1F3442; $base-900: #152128; $base-hover: #1F80C1; $base-subtle: #CAE0EF;
{
"color": {
"base": {
"value": "#389CDF",
"type": "color"
},
"onBase": {
"value": "#141310",
"type": "color"
},
"scale": {
"50": {
"value": "#F1F9FD",
"type": "color"
},
"100": {
"value": "#DBEEFA",
"type": "color"
},
"200": {
"value": "#B9DCF3",
"type": "color"
},
"300": {
"value": "#89C1E6",
"type": "color"
},
"400": {
"value": "#5DA5D5",
"type": "color"
},
"500": {
"value": "#3B87BA",
"type": "color"
},
"600": {
"value": "#346A8E",
"type": "color"
},
"700": {
"value": "#2A4D64",
"type": "color"
},
"800": {
"value": "#1F3442",
"type": "color"
},
"900": {
"value": "#152128",
"type": "color"
}
}
}
}